SPATIAL VARIABILITY AND ESTIMATION OF TREE ATTRIBUTES IN A PLANTATION FOREST IN THE CASPIAN REGION OF IRAN USING GEOSTATISTICAL ANALYSIS

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AKHAVAN R.; KIA DALIRI H.

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Paper Information

Journal: CASPIAN JOURNAL OF ENVIRONMENTAL SCIENCES (CJES) Year:2010 | Volume:8 | Issue:2 Page(s): 163-172

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Title

SPATIAL VARIABILITY AND ESTIMATION OF TREE ATTRIBUTES IN A PLANTATION FOREST IN THE CASPIAN REGION OF IRAN USING GEOSTATISTICAL ANALYSIS

Author(s)

AKHAVAN R. | KIA DALIRI H. | Issue Writer Certificate

Keywords

GEOSTATISTICSQ3

SPATIAL VARIABILITYQ3

PLANTATION FORESTQ3

TREE ATTRIBUTEQ3

CASPIAN REGIONQ3

Abstract

This research was conducted to investigate SPATIAL VARIABILITY and estimate TREE ATTRIBUTEs in a PLANTATION FOREST in the CASPIAN REGION of Iran using geostatistical analysis. Sampling was performed based on a 50m×125m systematic grid in a maple stand (Acer velutinum Boiss) 18 years of age using circular samples of 200m2 area. Totally, 96 sample plots were measured in 63 hectares and 14.25 hectare was inventoried as full census area. Experimental variograms for forest stem basal area, stem density and tree height attributes were calculated and plotted using the geo-referenced inventory plots. The calculated variograms of basal area and height showed a high spatial auto-correlation, which is fitted by spherical model. However, stem density showed a large nugget effect. Estimations for basal area and height interpolated by ordinary block kriging and cross validation results showed that all the estimations were accurate. Furthermore, the estimated kriged mean of basal area showed no significant difference to the real mean in the full census area. Therefore, geostatistical analysis is able to capture and explain the SPATIAL VARIABILITY as well as estimate TREE ATTRIBUTEs (not stem density) in this kind of PLANTATION FOREST, accurately.

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APA: Copy

AKHAVAN, R., & KIA DALIRI, H.. (2010). SPATIAL VARIABILITY AND ESTIMATION OF TREE ATTRIBUTES IN A PLANTATION FOREST IN THE CASPIAN REGION OF IRAN USING GEOSTATISTICAL ANALYSIS. CASPIAN JOURNAL OF ENVIRONMENTAL SCIENCES (CJES), 8(2), 163-172. SID. https://sid.ir/paper/240752/en

Vancouver: Copy

AKHAVAN R., KIA DALIRI H.. SPATIAL VARIABILITY AND ESTIMATION OF TREE ATTRIBUTES IN A PLANTATION FOREST IN THE CASPIAN REGION OF IRAN USING GEOSTATISTICAL ANALYSIS. CASPIAN JOURNAL OF ENVIRONMENTAL SCIENCES (CJES)[Internet]. 2010;8(2):163-172. Available from: https://sid.ir/paper/240752/en

IEEE: Copy

R. AKHAVAN, and H. KIA DALIRI, “SPATIAL VARIABILITY AND ESTIMATION OF TREE ATTRIBUTES IN A PLANTATION FOREST IN THE CASPIAN REGION OF IRAN USING GEOSTATISTICAL ANALYSIS,” CASPIAN JOURNAL OF ENVIRONMENTAL SCIENCES (CJES), vol. 8, no. 2, pp. 163–172, 2010, [Online]. Available: https://sid.ir/paper/240752/en

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